More like Skylands. If you don't know what they are, they were a type of world generation able to accessed through editing some stuff in .minecraft stuff introduced in Beta 1.7, and were planned for Beta 1.8. Then, in 1.8 Notch pushed them back until the Nether was more fun (apparently this was going to be a heaven of sorts) and in 1.9 the Skylands got turned into The End.

If I remember correctly, Amplified has some code from Skylands, so it can spawn big floating islands

I could run it.... then I couldn't. My computer is emotional when it comes to running to Minecraft, sometimes it works.... other times.....

Your ComputerYay! I am running this game pretty fast!But is it fast enough for owner?Am I not fast enough for my OWNER!?!I'll show you, you dumb owner *slows down*Heh heh. Wait, if I run to slow Owner will throw me out!No, Owner! Don't throw me out I am running as fast as I can!